Q4. Solve the following simultaneous equations using graphical methods:

i.
[tex]\[ x = y_1 \][/tex]
[tex]\[ 2x + y = 3 \][/tex]

ii.
[tex]\[ -x + y = 4 \][/tex]
[tex]\[ 2x - 5y = 1 \][/tex]

iii.
[tex]\[ 2x - y = -2 \][/tex]
[tex]\[ y + 1 = x \][/tex]

iv.
[tex]\[ 3x - 2y = 13 \][/tex]

v.
[tex]\[ y = 3x - 5 \][/tex]
[tex]\[ x = ? \][/tex]

vi.
[tex]\[ 5 = x + 4y \][/tex]
[tex]\[ 2x = ? \][/tex]